The present disclosure provides a double-sided two-dimensional coding, includes a transparent medium layer on which a metal layer is plated, and a two-dimensional coding image is fused through the metal layer. The present disclosure also provides a flexible printed circuit and manufacturing method for a double-sided two-dimensional coding. By lasering the metal layer corresponding to the transparent medium layer, the metal layer is fused through to form a two-dimensional coding image, and the transparent medium layer is retained as a carrier of the two-dimensional coding image, and an effect of reading the two-dimensional coding on both sides can be achieved.

A circuit board includes a board, a land on the board, and an electronic component soldered to the land, the electronic component including a surface with a back surface electrode portion, the surface opposing the board, the land including an electrode land portion and a protruding land portion, the back surface electrode portion opposing the electrode land portion in a state in which the electronic component and the board are soldered, and the protruding land portion and the electrode land portion being integrated.

A flexible circuit board includes a flexible light-permeable carrier, a circuit layer, a mark and a stiffener. The circuit layer and the mark are located on a top surface of the flexible light-permeable carrier. A predetermined area and a stiffener mounting area corresponding to each other are defined on the top surface and a bottom surface of the flexible light-permeable carrier, respectively. The mark is opaque to create a shadow mark having a longitudinal reference side and a lateral reference side on the bottom surface. The stiffener is adhered to the stiffener mounting area defined on the bottom surface by aligning with the longitudinal reference side and the lateral reference side of the shadow mark.

In a step of forming a conductive pattern, a photoresist is exposed a plurality of times while a fourth mask including a fourth light shielding mark and a fifth mask including a sixth light shielding mark are sequentially arranged in a longitudinal direction, and the photoresist is developed to form a plating resist, and the plating is carried out using this. In a step of exposing the plating resist, in the photoresist, an opposing portion of the fourth mask at the time of the first exposure is overlapped with the fifth mask at the time of the second exposure. A first conductive mark is formed by the first exposure of the photoresist through the fourth light shielding mark and by plating using the plating resist. A third conductive mark is formed by the second exposure of the photoresist through the fifth mask and by plating using the plating resist.

A circuit board includes a substrate having a through hole, a circuit layer, a first measurement mark and a second measurement mark. According to the first and second measurement marks, an electronic detection device can measure a first distance between a first edge of the through hole and the first measurement mark and a second distance between a second edge of the through hole and the second measurement mark to determine whether the through hole has an undesired size or shift.

The disclosure provides a bonding method, the bonding method includes: bonding first areas of a plurality of flexible printed circuit boards on a substrate, the plurality of flexible printed circuit boards being sequentially arranged along a direction parallel to a first side of the substrate, and a second area of each of the flexible printed circuit boards exceeds the first side; cutting at least one of the flexible printed circuit boards to enable second sides of all the flexible printed circuit boards to be flush and parallel to the first side, wherein each of the second sides is a side of the second area away from the first area; and bonding second areas of the flexible printed circuit boards with a connection circuit board.

A packaging system comprises: a package forming a set of discrete compartments; and a film portion interfacing with the package. The film portion includes a set of one or more electrically conductive traces in which each electrically conductive trace is associated with a respective compartment of the set of discrete compartments. Each electrically conductive trace of the set of electrically conductive traces forms a respective circuit loop that has a terminal end that terminates within an interface region of the film portion to collectively form a termination pattern. At least one of the package or the film portion have two or more alignment ports defined therein that are arranged according to an alignment pattern, each alignment port passing through at least one of the package or film portion.

A conductor structural element includes an electronic component which is inserted into a dielectric layer and connected to a conductor pattern structure consisting of an electrically conductive material applied to an electrically conductive base layer by electroplating, wherein at least one contacting element of the electronic component is inserted into an assigned mounting area, which is formed as a recess in the conductor track structure, the at least one contacting element and the conductor track structure being connected to each other in an electrically conductive manner.

A semifinished product with a sacrificial structure and two component carriers releasably formed on opposing main surfaces of the sacrificial structure. The sacrificial structure includes a central structure and releasing layers on or over both opposing main surfaces of the central structure The central structure includes a dummy core being covered, in particular fully, on or over both main surfaces thereof with a respective one of two spatially separated sections of separate material, in particular separate dielectric material.

A component carrier which includes a stack having at least one electrically conductive layer structure and/or at least one electrically insulating layer structure, a deformed layer connected to and/or forming part of the stack and being bent so as to define accommodation volumes for components, and the components, wherein each of the components is accommodated in a respective one of the accommodation volumes.